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Huawei H12-311_V3.0 HCIA-WLAN V3.0 Exam Practice Test

Demo: 101 questions
Total 338 questions

HCIA-WLAN V3.0 Questions and Answers

Question 1

According to the following output, the correct statement below is ().

display version

Huawei Versatile Routing Platform Software

VRP (R) software, Version 5.70 (AC6605 V200R001C00)

Copyright (C) 2003-2012 Huawei TECH CO., LTD

Quidway AC6605-PWR Routing Switch uptime is 0 week, 1 day, 23 hours, 33 minutes

H852V26S 0(Master): uptime is 0 week, 1 day, 23 hours, 33 minutes

512M bytes DDR Memory

128M bytes FLASH

Check the running status of the AC6605.

(Select 3 Answers)

Options:

A.

display version, you can see that the VRP version number of the current device is 5.70

B.

At present, the equipment has been running continuously for 1 day, 23 hours, 33 minutes

C.

At present, the device has used 512M bytes of system memory

D.

The total size of the flash memory of the device is 128M bytes

Question 2

802.11 Wireless LAN CSMA/CA Which of the following are included in the mechanism ()? (Select 3 Answers)

Options:

A.

Carrier sense

B.

Multiple access

C.

Conflict detection

D.

Conflict avoidance

Question 3

exist PoE Of terms, AP What does it belong to ()?

Options:

A.

PSE

B.

PD

C.

PI

D.

PSU

Question 4

If a AP Has been added offline, then AP You can go online directly.

Options:

A.

True

B.

False

Question 5

As a guarantee WLAN There will be no interference between the various channels of the network, which of the following frequency bands belong to China5.8GHz Use frequency band()? (Select 2 Answers)

Options:

A.

149

B.

151

C.

153

D.

155

Question 6

For indoor distributed APs, which of the following descriptions is correct is ().

Options:

A.

AP power up to 800mW

B.

Can be deployed in conjunction with the operator's 3G network

C.

Waterproof and dustproof

D.

AP6310SN supports dual frequency mode

Question 7

CAPWAP Which of the following standards organization proposed the agreement ()?

Options:

A.

FCC

B.

IETF

C.

CCC

D.

ETSI

Question 8

For Huawei AC To create a user, first use aaa Command to enter the view.

Options:

A.

True

B.

False

Question 9

Which of the following is correct about the power calculation ()?

(Select 3 Answers)

Options:

A.

0 dBm = 1 mW

B.

3 dBm = 2 mW

C.

10 dBm = 100mW

D.

27 dBm = 500mW

Question 10

Which of the following commands is not necessarily run in the WLAN view?

Options:

A.

ssid-profile name xxx

B.

capwap source interface vlanif 100

C.

ap auth-mode mac-auth

D.

ap-group name xxx

Question 11

Which of the following is IEEE A wireless local area network standard originally formulated ()?

Options:

A.

IEEE 802.11

B.

IEEE 802.10

C.

IEEE 802.12

D.

IEEE 802.16

Question 12

Which of the following statements are correct () ? (Select 3 Answers)

(Select 3 Answers)

Options:

A.

WDS can transmit the data of the wired network through the wireless network as a relay structure, so that the network data can be transmitted to another wireless network

Network environment, or another wired network.

B.

The wireless network bridging function usually refers to one-to-one, but the WDS architecture can do one-to-many.

C.

WDS can allow wireless APs to bridge (relay) wirelessly, but the bridged wireless APs cannot provide coverage at the same time.

D.

Because the virtual network line is formed through the wireless network, WDS is also called the wireless network bridging function.

Question 13

Which of the following technologies work at 5 GHz ()? (Select 2 Answers)

Options:

A.

radar

B.

Bluetooth

C.

Infrared

D.

Digital satellite

Question 14

If one BSS Totally by STA Composition, then BSS What is also called ()?

Options:

A.

IBSS

B.

ESS

C.

SSID

D.

BSA

Question 15

After one data frame is sent and confirmed, what is the time interval to wait before sending the next data frame ()?

Options:

A.

SIFS

B.

IFS

C.

DIFS

D.

PIFS

Question 16

Drag WLAN concepts on the left to their corresponding descriptions on the right.

Options:

Question 17

Used as AP and AC Establish CAPWAP tunnel VLAN What is it VLAN ()?

Options:

A.

manage VLAN

B.

Serve VLAN

C.

user VLAN

D.

Certification VLAN

Question 18

In the following description of WEP encryption, the error is ().

Options:

A.

WEP encryption uses a stream encryption algorithm

B.

WEP encryption adds IV to destroy the regularity of the key

C.

The length of IV in WEP encryption is 48 bits

D.

WEP encryption allows the device to store four keys at the same time

Question 19

about" AP6010DN

Options:

A.

AP6010DN

B.

AP6010DN

"The following statement is incorrect for the naming ()

middle" AP"Enterprise network AP In the specific prefix " 601"

On behalf of the standard indoor installation type

.

1 generation

C.

AP6010DN middle"D"represent AP Is dual frequency AP, While supporting 2.4GHz ,5GHz Frequency band

D.

AP6010DN middle"N"represent AP Yes 802.11n of AP

Question 20

Which of the following options is the frequency range supported by China 5GHz Frequency band()?

Options:

A.

5.15~5.25GHz

B.

5.25~5.35GHz

C.

5.725~5.825GHz

D.

5.725~5.850GHz

Question 21

pass through FTP Way to upgrade AP, You need to ensure AP and FTP Servers can communicate with each other, and AP Put the upgrade file in FTP Root directory.

Options:

A.

True

B.

False

Question 22

For shared key authentication, the error described below is ().

Options:

A.

After adopting shared key authentication, you must use WEP Encryption

B.

The shared secret requires users and AP Use the same shared secret

C.

For skinny AP, The shared key is preset in AC middle

D.

The disadvantages of shared keys are poor scalability and not very secure

Question 23

for AC6605 , The following command () can be used to view AP Is it online?

Options:

A.

display ap online all

B.

display ap all

C.

display ap-type all

D.

dispay ap-run-info all

Question 24

an examination AC What is the command for online users ()?

Options:

A.

display users all

B.

display user-interface console 0

C.

display local-user

D.

display access-user

Question 25

Basic service sets (BSSs) are basic WLAN units.

Options:

A.

True

B.

False

Question 26

A large number of devices appear AP and AC How to deal with the version mismatch failure ().

Options:

A.

Upgrade the versions to match each other

B.

replace AP equipment

C.

Replace the switch

D.

an examination POE Is the power supply normal

Question 27

What was the name of the first radio communication network based on packet technology ()?

Options:

A.

INTERNET

B.

ARPANet

C.

ALOHNET

D.

NSFnet

Question 28

Among the following obstacles, () has the largest loss of wireless signals.

Options:

A.

Plaster ceiling

B.

Glass

C.

120mm brick wall

D.

200mm concrete wall

Question 29

802.11 What parameters are used in the frame to reorganize the frame segment ()?

Options:

A.

Frame Control

B.

Duration

C.

Address Bit

D.

Fragment number

Question 30

For outdoor long-distance point-to-point backhaul, the antenna of () should be selected.

Options:

A.

High gain, small lobe width

B.

High gain, large lobe width

C.

Omnidirectional

D.

Low gain, large lobe width

Question 31

The following figure shows the WLAN topology of an enterprise. If the direct forwarding mode is used without taking policy-based routing into account, which of the following paths may be used on the network?

Options:

A.

AP → SW3 → SW2 → AC → SW2 → SW1

B.

AP → SW3 → SW2 → SW1

C.

AP → AC → SW2 → SW1

D.

AP → SW3 → SW2 → AC → SW2 → SW3 → SW2 → SW1

Question 32

eSight The network management is Huawei's dedicated network management platform, but it can only manage Huawei's own equipment.

Options:

A.

True

B.

False

Question 33

WLAN When configuring the network, WMM Which of the following templates should the template be bound to ()?

Options:

A.

radio-profile

B.

traffic-profile

C.

security-profile

D.

service-set

Question 34

Huawei AP The product can only support one configuration SSID .

Options:

A.

True

B.

False

Question 35

What frame does the wireless client actively scan to obtain the surrounding wireless network information ()?

Options:

A.

Beacon frame

B.

Probe Request frame

C.

Authentication Request frame

D.

Association Request frame

Question 36

For the following WLAN networking configuration, which statement is correct ().

(Select 3 Answers)

Options:

A.

The user tries his best to ensure that the planning data is detailed when planning the data, which will greatly facilitate the later configuration

B.

Before sending the configuration to the AP, the AP must be online

C.

Configure the WMM template can be directly bound to the antenna

D.

The WMM template is bound to the RF template

Question 37

The following Huawei AP Which AP support SFP Fiber interface()?

Options:

A.

AP6010DN

B.

AP6310SN

C.

AP6510DN

D.

AP6610DN

Question 38

original 802.11 What is the working frequency band used by the agreement ()?

Options:

A.

2.4 GHz

B.

900 MHz

C.

2.0 GHz

D.

5 GHz

Question 39

If one 802.11n of AP support 2*2 of MIMO Technology, then this AP What is the theoretical rate of ()?

Options:

A.

150 Mbps

B.

300 Mbps

C.

450 Mbps

D.

600 Mbps

Question 40

ETSI Which country or region is the standards organization ()?

Options:

A.

China

B.

America

C.

Japan

D.

Europe

Question 41

By default, Huawei WLAN devices can implement intra-AC Layer 2 roaming without any configurations.

Options:

A.

True

B.

False

Question 42

The antenna gains gain through ().

Options:

A.

Use power amplifiers in antenna systems

B.

Make the antenna radiation more concentrated

C.

Use high-efficiency antenna feeder

D.

Use equipment with low standing wave ratio

Question 43

CAPWAP The agreement is made by IEEE Standards organization in 2009 year 4 One of the month WLAN Standard for AC And thin AP Communication between.

Options:

A.

True

B.

False

Question 44

Which of the following authentication modes belong to link authentication?

Options:

A.

PSK authentication

B.

PPSK authentication

C.

Shared key authentication

D.

Open system authentication

Question 45

Which of the following ports can only belong to 1 Piece VLAN ().

Options:

A.

access

B.

hybrid

C.

trunk

D.

eth-trunk

Question 46

Indoor installation AP The power is generally () mW .

Options:

A.

100

B.

500

C.

800

D.

50

Question 47

Which of the following types of frames does a STA send to obtain surrounding wireless network information during active scanning?

Options:

A.

Association Request frame

B.

Beacon frame

C.

Authentication Request frame

D.

Probe Request frame

Question 48

How to set the condition of switching trigger (). (Select 2 Answers)

Options:

A.

when STA Yohara AP Start switching after reaching a certain distance

B.

Set current AP With neighbors AP Signal strength ratio, switch when reaching the threshold

C.

Check the packet loss rate and start the handover when the packet loss rate reaches a certain value

D.

Yohara AP Start the switch when the network speed is very slow during association

Question 49

Int-Serv The model provides users with end-to-end absolute

Options:

A.

Limited bandwidth reservation

B.

Low forwarding efficiency

C.

Scalability is not good

D.

Not conducive to traffic monitoring

Question 50

Which of the following agreements are IEEE customized 802.11 standard() ? (Select 3 Answers)

Options:

A.

802.11a/b/g/n

B.

802.11i

C.

802.1X

D.

802.11s

Question 51

Among the following encryption methods, the most secure is ()

Options:

A.

Plaintext encryption

B.

WEP encryption

C.

TKIP encryption

D.

CCMP encryption

Question 52

The 802.11 physical layer standard defines some common operations on the physical layer of wireless networks: such as QoS, security, and roaming operations.

Options:

A.

True

B.

False

Question 53

802.11 In the frame, it means that the wireless station AP When sending a signal, To DS and From DS What are the values of ()?

Options:

A.

0,0

B.

0,1

C.

1,0

D.

1,1

Question 54

BSS Full name Basic Service Set ,BSS It can be divided Independent BSS and Infrastructure BSS Two kinds.

Options:

A.

True

B.

False

Question 55

CAPWAP What are the main contents of the agreement ()? (Select 3 Answers)

Options:

A.

AP right AC Automatic discovery and AP&AC State machine operation and maintenance

B.

AC right AP Perform management and business configuration delivery

C.

STA Data encapsulation CAPWAP Tunnel forwarding

D.

Defined Mac Layer and physical layer transmission rate

Question 56

There are three ways to judge Huawei's load balancing: traffic mode, session mode, and virtual switching mode.

Options:

A.

True

B.

False

Question 57

The following description about dual-link backup networking is incorrect ()

Options:

A.

Dual-link backup technology improves network reliability at important network nodes and ensures business stability

B.

Prepare AC Always be in the power-on state

C.

exist AP With active and standby AC In the process of establishing active and standby links, the link established first must be the active link

D.

Active and standby AC The network service configuration on the Internet must be consistent

Question 58

AP Unavailable IP Common reasons for addresses are (). (Select 3 Answers)

Options:

A.

Incorrect address pool configuration

B.

Address pool exhausted

C.

Intermediate network problem

D.

POE Power failure

Question 59

Which modulation method is the picture below ()?

Options:

A.

AM

B.

FM

C.

phase modulation

D.

Wave modulation

Question 60

Same user VLAN And the same SSID All wireless users can access the Internet, but they can’t access each other. What may be the cause of this phenomenon ()?

Options:

A.

Configured on the user’s gateway device ACL , Which prevents mutual access between users

B.

AC Configured on ACL , Which prevents mutual access between users

C.

Access AP Port isolation configured on the switch prevents mutual access between users

D.

wireless service-set User isolation is configured on the computer to prevent mutual access between users

Question 61

Among the following options, the common WLAN The source of interference is ().

(Select 3 Answers)

Options:

A.

Micro-wave oven

B.

remote control

C.

cordless phone

D.

Bluetooth transmission equipment

Question 62

Which of the following wireless frames are control frames ()? (Select 3 Answers)

Options:

A.

Beacon

B.

RTS

C.

CTS

D.

PS-Poll

Question 63

an examination AP What is the command of the running system version ()?

Options:

A.

display ap all

B.

display ap-run-info id x (x

C.

display ap version id x(x

D.

display ap update all

Question 64

802.11g What rates can be supported?

Options:

A.

1,2,5.5,11&6,9,12,18,24,30,36,48,54 Mbps

B.

6, 9, 12, 18, 24, 36, 48, 54 Mbps

C.

1,2,5.5,11&6,9,12,18,24,36,48,54 Mbps

D.

6,9,12,18,24,30,36,48,54 Mbps

Question 65

Which of the following descriptions of management VLAN is correct is ().

Options:

A.

Mainly responsible for transmitting data when WLAN users go online

B.

PVID VLAN under the WLAN ESS interface

C.

Service VLAN under the service set template

D.

Responsible for the establishment of the CAPWAP tunnel between AC and AP

Question 66

Mesh Networking is defined in which of the following protocols ()?

Options:

A.

802.11a

B.

802.11g

C.

802.11e

D.

802.11s

Question 67

An engineer takes an AP to a shopping mall for onsite WLAN surveying, with only a simple building map and no known obstacles. During onsite signal attenuation test, the AP works in ___ mode.

Options:

A.

Fat AP

B.

Survey Mode

C.

Fit AP

D.

Monitor Mode

Question 68

A company wants to deploy WLAN, the company has purchased a batch of wireless APs that support 802.11n, when WLAN is deployed, only support Only 802.11n wireless clients can connect to the company's WLAN

Options:

A.

True

B.

False

Question 69

Huawei plug-in controller ACU Board manageable AP What is the maximum number of ()?

Options:

A.

1024

B.

256

C.

512

D.

128

Question 70

CAPWAP Protocol support Split Mac and Local Mac Two working modes.

Options:

A.

True

B.

False

Question 71

Which of the following options are 802.11b/g What are the differences between the agreements? (Select 3 Answers)

Options:

A.

Different throughput

B.

The two protocols use different technologies

C.

Different supported data rates

D.

Working frequency is different

Question 72

original 802.11 What is the maximum rate supported by the protocol Mbps ()?

Options:

A.

1

B.

2

C.

5.5

D.

11

Question 73

Barker Code is a 11 Bit sequence (e.g. 10110111000 ), there are advantages in wireless transmission, which can effectively reduce interference, but it reduces efficiency.

Options:

A.

True

B.

False

Question 74

802.11g What is the bandwidth of each channel of the frequency band ()?

Options:

A.

25 MHz

B.

20 MHz

C.

50 MHz

D.

22 MHz

Question 75

To obtain better coverage, try to use AP Signal can ( ) Through the wall.

Options:

A.

vertical

B.

parallel

C.

45°

D.

60°

Question 76

When a hardware failure occurs in an AP in the network, in order to avoid data reconfiguration, the user can quickly complete the AP replacement by configuring the AP.

replace.

Options:

A.

True

B.

False

Question 77

Which of the following are AP Factors to consider in capacity planning ().

(Select 3 Answers)

Options:

A.

Equipment performance

B.

Number of concurrent users

C.

Bandwidth requirement

D.

Power supply type

Question 78

802.11n Standard uses dual band (2.4GHz and 5GHz ), the theoretical transmission rate can reach up to 300Mbps, The actual test rate can reach arrive 100Mbps above.

Options:

A.

True

B.

False

Question 79

In enterprise office scenarios, 40 MHz channel bandwidth is usually configured on the 2.4 GHz frequency band.

Options:

A.

True

B.

False

Question 80

for dBm ,dB,dBi, The following description is correct ().

(Select 3 Answers)

Options:

A.

dBm : Absolute value of characterizing power

B.

dBi and dBd : Characterize the relative value of gain

C.

dB : The relative value of characterizing power

D.

If the antenna of A is 12dBi , The second antenna is 14dBi , It can be said that A is smaller than B 2dBi

Question 81

WLAN security policies are configured in security profiles. As such, WPA/WPA2 PPSK must be configured in the security profiles.

Options:

A.

True

B.

False

Question 82

Which is the longest interval between 802.11 frames ()?

Options:

A.

SIFS

B.

IFS

C.

DIFS

D.

PIFS

Question 83

How many management nodes () does eSight Standard Edition support at most?

Options:

A.

60

B.

2000

C.

5000

D.

20000

Question 84

The wireless LAN architecture is mainly divided into controller-based thin

Options:

A.

True

AP Architecture and traditional independent fat AP Architecture.

B.

False

Question 85

Which of the following options is 802.11g The maximum rate supported by the protocol ()?

Options:

A.

11Mbps

B.

22Mbps

C.

54Mbps

D.

108Mbps

Question 86

Which of the following descriptions of business VLAN is correct is ().

(Select 3 Answers)

Options:

A.

Mainly responsible for transmitting data when WLAN users go online

B.

PVID VLAN under the WLAN ESS interface

C.

Service VLAN under the service set template

D.

If the data tunnel is used for forwarding, user data will not be transmitted through the business VLAN business

Question 87

according to AP and AC The inter-network architecture can divide the networking mode into two-tier networking and three-tier networking.

Options:

A.

True

B.

False

Question 88

about 5G The working principle of priority, the following statement is correct ().

Options:

A.

5G Priority characteristics refer to 5G Client sends data first

B.

5G After the priority is turned on, only support 2.4G The network transmission speed of the client will be slower

C.

5G Priority request AP Is dual frequency AP Can work normally

D.

5G Priority requires all clients to support at the same time

Question 89

802.11n exist 20M How many sub-carriers can be used to transmit data in the mode ()?

Options:

A.

48

B.

52

C.

54

D.

56

Question 90

1024-QAM technology allows each subcarrier to carry __ bits.

Options:

A.

8

B.

10

C.

12

D.

14

Question 91

AP The systematic process of radio frequency resource management is ().

Options:

A.

Acquisition -> Decision -> Analysis -> Execution

B.

Analysis -> Acquisition -> Decision -> Execution

C.

Acquisition -> Analysis -> Execution -> Decision

D.

Acquisition -> Analysis -> Decision -> Execution

Question 92

Which of the following are the relevant parameters of the Traffic template ().

(Select 2 Answers)

Options:

A.

802.3 priority mapping strategy

B.

CAC strategy

C.

Tunnel priority mapping strategy

D.

ACK strategy

Question 93

The MEth0/0/1 interface of AC6605 is used for in-band network management. The default address is: 192.168.1.1/24, and it cannot be modified.

Options:

A.

True

B.

False

Question 94

TKIP Encryption ratio WEP Encryption security is high because of (). (Select 3 Answers)

Options:

A.

Used longer IV

B.

Added a key distribution mechanism, no longer using a single key

C.

A more complex encryption algorithm is used

D.

Adopt a stronger data verification algorithm

Question 95

If an SSID is incorrectly configured, STAs may not discover the target Wi-Fi. How do I modify the SSID to enable STAs to discover the target Wi-Fi?

Options:

A.

Modify the WDS profile.

B.

Modify the RRM profile.

C.

Modify the SSID profile.

D.

Modify the VAP profile.

Question 96

exist WDS In the deployment, what kinds of bridge networking modes are included ()? (Select 3 Answers)

Options:

A.

Point-to-point method

B.

Point-to-multipoint

C.

Relay bridging method

D.

Multipoint to multipoint

Question 97

802.11n MAC Which of the following are included in the layer improvement

technology ()? (Select 2 Answers)

Options:

A.

Frame aggregation technology

B.

MIMO Technology

C.

Block confirmation technology

D.

Beamforming technology

Question 98

The following statement is correct ().

(Select 3 Answers)

Options:

A.

WPA2 PSK authentication requires the user to enter a user name and password to connect

B.

When the user performs web authentication, it is triggered by the user's http message after successfully obtaining the IP address; at this time, it is forcibly redirected to the portal server,

Go through the certification process

C.

WPA2 uses 802.1X authentication

D.

WAPI is China's national standard system for wireless LAN

Question 99

According to the different signal parameters controlled, what modulation methods can be divided into ()? (Select 3 Answers)

Options:

A.

AM

B.

FM

C.

phase modulation

D.

Wave modulation

Question 100

To the following WLAN In the description of the network diagram, the error is ().

Options:

A.

The picture shows the bypass networking

B.

Can be configured and managed on the access switch VLAN of PVIDA.

C.

can use AC As DHCP Server ,give AP distribute IP address

D.

You cannot use the aggregation switch to STA distribute IP address

Question 101

Which of the following types of frames does a STA receive to obtain surrounding wireless network information during passive scanning?

Options:

A.

Authentication frame

B.

Association Request frame

C.

Beacon frame

D.

Probe Request frame

Demo: 101 questions
Total 338 questions